Researchers Succeed in Inducing Ferromagnetism in High-k Dielectric Materials (Update)

A multidisciplinary team of researchers led by Ashutosh Tiwari of Nanostructured Materials Research Laboratory (NMRL) of University of Utah has succeeded in inducing high temperature ferromagnetism in highly insulting epitaxial CeO₂ films by dilute doping of cobalt. These films are transparent in the visible regime and exhibit a very high Curie temperature ~875K with a giant magnetic moment. It has been shown that the ferromagnetic property is intrinsic to the CeO₂ system and is not a result of any secondary magnetic phase or cluster formation. Observation of high temperature ferromagnetism in lightly doped high-k dielectric materials with giant magnetic moment and such a high transition temperature is remarkable and represents a groundbreaking step in Spintronics.

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<p><a href="http://www.physorg.com/news63964662.html">Researchers Succeed in Inducing Ferromagnetism in High-k Dielectric Materials (Update)</a></p> <p>A multidisciplinary team of researchers led by Ashutosh Tiwari of Nanostructured Materials Research Laboratory (NMRL) of University of Utah has succeeded in inducing high temperature ferromagnetism in highly insulting epitaxial CeO₂ films by dilute doping of cobalt. These films are transparent in the visible regime and exhibit a very high Curie temperature ~875K with a giant magnetic moment. It has been shown that the ferromagnetic property is intrinsic to the CeO₂ system and is not a result of any secondary magnetic phase or cluster formation. Observation of high temperature ferromagnetism in lightly doped high-k dielectric materials with giant magnetic moment and such a high transition temperature is remarkable and represents a groundbreaking step in Spintronics. </p>